Reaming and tapping machine



(No Model.)

W. PORTEOUS..

Patented Nov.Y 17, 1891.

Y 7 Sheets-Sheet 2.

REAMING AND TAPPING MACHINE.

(No Model.) l 'z sheetgmshe'en 3.. W. V]?-0R']:OSl REAMING AND TAPPING'MACHINE.

No. 463,337. Patented 110V. 17, 1891.

(No Model.) 7 Sheets-Sheet 4.

W. PORTEOUS. BEAM-ING AND TAPPING MACHINE.

N0. 463,337. Patented N OV. 17,1891.

nlnmlllmm mlmmlmw l IIIIIIIUHIL (IIoModel.)v 7 Sheets-Sheeta 5A. W.PORTEOUS. REAMING AND TAPPING MACHINE.

Y No. 463,337. Patented Nov. 17, 18911.l

(No Model.) 7 Sheets-Sheet 6,

Y W. PORTEQUS.' REAMING AND TAPPING MACHINE.

No. 463,337. Patenjned Nov. 17.1391.

Hummm (No Model.) 'z sheets-sneer 7.

W. PORTEOUS. RBAMING AND TAPPING MACHINE.

10.463,337. IPabmw Nov. 17, l1891.

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NITED STATES ATENT Fricn.

REANHNG ANDTAPPING IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 463,337, dated'November 17, 1891.

Application tiled February 16 1891. Serial No. 381,681. (No model.)

To all whom, it may concern:

Be it known that I, WILLIAM PoRTEoUs, a citizen of the United States,residing at Elmwood Place, in the county of Hamilton and State of Ohio,have invented certain new and useful Improvements in Combined Reamingand Tappin g Machines, of which the following Y is a fullclear, andexact description, refertop frame broken away.

ence being had to the accompanying drawings, forming a part of thisspecification.

My invention relates to machines for reaming and tapping cocks, valves,and otherbrass ttings, and it has for its object theimprovedconstruction of such machines, whereby their efficiency is increased andwhereby they are rendered as nearly automatic as possible.

The novelty of my invention will be hereinafter set forth, andspecifically pointed out in the claims.

In the accompanying drawings, Figure 1, Sheet 1, is a sectionalelevation of a machine embodying my invention. Fig. 2, Sheet 2, is aplan View of the same with a portion 0f the Fig. 3, Sheet 3, is asectional plan on the dotted line acof Fig. 1. Fig. 4, Sheet 4, is asectional plan on the dotted line fg/ y of Fig. l. Fig. 5, Sheet 5, isan enlarged side elevation of one of the workcarrying chucks. Fig. 6,Sheet 5, is a central sectional side elevation` of the same. Fig. 7,Sheet 5, is a plan View ofthe same. Fig. S, Sheet G, is a front endelevation of the same. Fig. 9Sheet 6, is a rear end elevation of thesame. Fig.10,Sheet 6, is an enlarged plan of the chuck-spindle actuatorand holder. Fig. 11, Sheet 6, is an enlarged plan View of thechuck-spindle-locking disk. Fig. I2, Sheet 6, is an enlarged plan viewof the ratchet-Wheel. Fig. 13, Sheet 6, is an enlarged plan view of thelocking-disk for Ithe table. Fig. l-,Sheet 7, is a sectional detail ofthe upper part of the machine. Fig. 15, Sheet 7, is a detail sideelevation of the reversing mechanism foi-the tapspindles. Fig. 16, Sheet7, is a sectional detail through the dotted line ze' of Fig. 15, lookingto the left.

The same letters of reference are used to indicate identical parts inall the figures.

The machine consists, essentially, of a series of vertically reciprocating and rotating tool-carrying spindles set in a circle and ahorizontal intermittent] y-revolvin g work-carrying table provided withchucks for supporting the Work to be acted on by the tools, andmechanism for actuating the parts automatically in such manner that thespindles descend simultaneously and act on a corresponding numberv of.pieces of work and then ascend, during which ascension the table isshifted and Athe work automatically turned to present a different faceto the tools as they again descend.

The'frame of the machine, Figs. 1, 2, 3, and 4, is composed of the baseA, middle platform B, top platform C, and supporting-posts D for theplatforms, all rigidly secured together. Journaled in pillow-blocks E onthe base A is a horizontal shaft F, extending-under the platform andhaving upon its outer end the concdriving pulley G and upon its innerend a small bevel-gear H.k .I ust over the platform B is a horizontalintermittently-revolving circular work-carrying table I, having ank eX-tended tubular hub c., centrally journaled through the platforms B,Fig. 1. Ooincident -with the hub a is a tubular bearingb, extendingthrough and down from the platform C, with its lower end slightly abovethe table I. Journaled inthe bearing b and through the table I and hub dis a tubular shaft J, having upon its end, beneath the platform B, abevelgear K, with which the gear H meshes. the upper end of the shaft J,above the platform O, are secured two gear-wheels c d of differentdiameters. Extending through and guided in the tubular shaftJ is a rodor shaft I., having secured upon its upper end, above the gears c CZ, arigid spider-frame M, Figs. 1 and 2, having seven radial arms ofdifferent length and connected attheir ends by anintegral segmentalbrace. Thearms radiate at angles of forty-five degrees to each other,

leaving an open right-angular space between two of the arms, as seen inFig. 2. fIlheseven vertical tool-carrying spindles, founofwhich arelettered N and theother three O,I are set Upon in a circle and arejournaled in and carried by the arms of the spider. For purposes-ofvertical adjustment I have shown the upper endot each spindle threadedand screwed into a bushing e, journaled in the end of the arm and heldin place by washers f and nuts g. Each spindle extends down and isfeathered in a tubular shaft h, journaled in and IOO through theplatform C, and has upon its lower end a socketed head for the receptionand retention of the tool.

The mechanism for lowering and raising the rod L, and with it the spiderM and spindles N O, so as to lower the latter `to act on the workcarried by the table I and then'lift or retract them to permit the tableto be shift-4 ed, is illustrated in Figs. 1, 2, and 3, where P is avertical shaft j ournaled at its lower end in the base A and at itsupper end in a swell or extension of the platform B. Upon the shaft P issecured a worm-wheel Q, which meshes with a worm R upon the maindriving-shaft F, and between the worm-wheel Q and the'base A is a drumS, having an annular camgroove i in its periphery'. Pivoted, as atj, ina bearing T upon the base A is a lever U, whose one end is connected bypivoted links K to the lower end of the rod L and whose outer endcarries a lateral pin Z, upon which is a friction-roller confined in thecamshaft t' of the drum S. It resultsfrom this construction that therotation of the shaft F causes the rotation of the shaft P and drum Sand effects the vibration of the lever U and the vertical reciprocationof the rod L, and with it the spider M and spindles N O, as will bereadily understood.

The three spindles lettered O are intended to carry taps or dies andrequire to be rotated in one direction while descending to cut thethreads, and to be rotated in the opposite direction while ascending, soas to remove the taps or dies without injury to the cnt threads, whilethe outer spindles N are intended to carry reamers or cutters and arerotated continuously in one direction, both in ascending and descending.

To rotate the spindles N, I secure to each of their tubular shafts h,Figs. 2 and 14, two adjustable pinions m n, integral, if desired, and sospaced that when the pinion m is caused to mesh with the gear C on theconstantly-rotating shaft .l the pinion n is below the gear d and out ofmesh therewith, as seen on the left of Fig. 14, and when the pinions areadjusted so that n meshes with the gear d, m is above the gear cand outof mesh therewith, as seen on the right of Fig. 14. In this Way all ofthe spindles N may be given a uniform speed of rotation, or some of themmay be given slower or faster speeds of rotation than the others, aswill be readily understood. The pinions m n are held locked in theiradjusted positions by set-screws, and the shafts h are held fromlongitudinal play by upper and lower collars o, Fig. 14.

The mechanism for rotating the tap-spindles O and reversing theirdirection of rotation is illustrated in Figs. 1, 2, 15, and 1G, where Vis a horizontal shaft parallel to the shaft F, but slightly above theplatform C and journaled in a bracket-arm W, and a bearing X upon abracket-shelf Y, secured to theplatform C. Secured upon the shaft V,near the arm XV, is a cone driving-pulley p, and upon its opposite endis secured a bevel-gear q. Each of the tubular shafts h, through whichthe tapspindles O are feathered, has secured upon its upper endabevelgear r, Figs. 1 and 2, slightly above the gear c, and it will beobserved in Fig. l that the spindles O are intermediate of the spindlesN. Meshing with the central gear r is a bevel-pinion s upon the end of ahorizontal shaft A at right angles to the shaft V in the same planetherewith and. suitably j ournaled in bearings on the platform C andshelf Y. Loose upon the shaft A and meshing on opposite sides of thegear s are two bevel-pinions t u, each having on its inner adjacent facea clutch-hub c. Feathered on the shaft A between the clutch-hubs of thepinions t u is a double clutch w, Figs. 15 and 1o, having an annulargroove in its periphery, with which engages the lower forked arm of abellcrank shifter B', pivoted, as at a', to a bracketarm b'. Upon aprojecting arm C,extending from the spider M, is an upwardly-extendingadjustable rod c',which passes through a perforation in the upper arm ofthe shifter 5 at its end. An adjustable collar d is secured upon the rodc above the shifter, as shown. Just behind the gear u a pinion e issecured upon the shaftA', and meshing with the pinion c on Veach sideare two idler pinionsf, Fig. 2, suitably journaled on the platform C.Meshing with each of the pinions f 0n its outer side is a pinion g',fast upon the end of a shaft D. Each of the two shafts D is parallel tothe shaft A', and suitably journaled on the platform C extends back toeach of the outerv and diametrically-opposite spindles 0. The inner endof each shaft D carries a bevel pinion 7L', meshing with its adjacentpinion o, as seen in Fig. 2. The pinions e,f, and vg are all in line andof the same diameter. It results from this construction and theadjustment of the parts that when the spider M, rod L, and spindles N Oare at the bottom of their downward strokes the collar d has come intocontact with the top of the shifter B', and has so tilted it as to throwthe clutch w into engagement with the clutch-hub fu of the pinion t,which thereby becomes locked to the shaft A and imparts the rotation ofthe shaft V to the shaft A', and bv means of the gears ef g to theshafts D', all rotating in the same direction and' imparting asimultaneous left-hand rotation of the three spindles O to back out thetaps as the spindles at this instant begin to rise. Just as thespindles, spider, and rod L reach the upper end of their stroke theunder part of the shifter is caught by the arm C and the shifter istilted back to disengage the clutch tu from the hub of the pinion t andto disengage it with the h ub of the pinion u, thereby reversing thedirection of rotation of the shafts A and D', and imparting a right-handrotation to the spindles O just as they begin to descend, as will bereadily understood.

Referring now to the circular intermit- IOO TIO

tently-shifted work-carrying table I, Figs. 1 and 3, I employ eightequidistant work-carrying 4chucks, Figs. 5, 6, and 7, radially set uponthe table and fastened by shanks i', secured in sockets extending in acircle around the table near its periphery. lVhen the table is at rest,during the time the spindles are de# scending to cause their tools toacton the work, seven of these chucks are directly under the spindles,while the eighth occupies the open space over which there is no spindle,as shown in Fig.v 2, and where an attendant. stands to take out theuished'work and to insert another blank to be acted on.

To intermittently revolve or shift the table j ust after the tools haveleft the work on their upstroke, and to hold vthe table locked duringthe downstroke of the spindles, I secure a ratchet-wheel E', Figs. 1, 4,and 12, upon the hub ct of the table, beneath the same and above theplatform B, and beneath the ratchet I secure upon the hub c. alockingdisk F', with eight equidistant notches j', Figs. 1, 4, and 13.Pivoted on the hub aabove the ratchet F is a pawl-carrier G', havingpivoted on its outer side a pawl H', engaging with the ratchet E', andheld against` the same by a spring 7c', Fig. 4. Secured upon the upperend of the shaft P just above the platform B are two disks Z' m', Figs.1 and 4, the former having an endless cam-groove n' on its upper face,in which is confined a friction-roller 0' on a pin projecting from theunderside of a lever I', pivoted at one end of the platform B, as at p',and carrying at its other end a pivoted link J', whose inner end ispivoted to the pawl-carrier G'. On the under side of the disk m' thereis an endless cam-groove q', in which is conlined a frictionroller r'upon apinprojecting upwardlyfrom the end of a lever K', pivoted as at s'on the platform B, and having at its inner end an inturned detent t' toenter the notchesjsuccessively in the disk F' to lock the table duringthe time the spindles are on their downstroke, and to be lifted out ofeach notch during the upper half of the upstroke of the spindles topermit thevibration of the lever I' inward to cause the pawl H to shiftthe table one-eighth of a revolution, whereupon the detent becomes againlocked in the next notch, and the pawl is then at once retracted toengage the next tooth of the ratchet, as will be readily understood.

Referring now to Figs. 5, 6, 7, 8, and 9, I would thus describe theconstruction and operation of the work-carrying chucks. Each chuck has abed-bar u' with a central perforation 1J through it and itsattaching-shank t" for the passage of the cuttings. The sides of the barn' are beveled downward, Fig. 9, to form a lock for the slidingchuck-spindlecarriers L' M', whose under sides are recessed to slip overand embrace the bar. Upon the inner end of the bar is a fixed block N',having journaled in its upper end a horizontal tubular bearingCt",'through which the rear end of the inner chuckspindle O', journaledthrough the carrier M', passes and is feathered. P' is a set-screwbearing in the carrier M' and having its rear end, not threaded,projecting in a recess in the block N' and bearing against a horizontallever Q', pivoted as at b", Fig. 7, in the block N', and carrying afriction-roller c" upon its end. The set-screw P' is provided with aperforated turning collar c interposed between the carrier M'and blockN', Figs. 5 and 6. A rectangular nut e" is secured upon the rearprojecting end of the tubular bearing ct", which nut has threeprojecting pins f upon its rear side disposed as shown in Fig. 9. Theouter carrier L has -journaled in its upper end a chuck-spindle R' inline with the spindle O', and in its lower louter side is recessed theballed end of a screw outer end of the screw S' is provided with anysuitable turning handle U'.

As seen in Fig. 1, clamping-jaws of the usual construction are securedto the 'adjacent ends lof the spindles 0' R', by and between which thework is held.

Secured upon the -pendent bearing b, Figs. l, 9, and l0, is a disk V',having as many equidistant radial projections i" as there are chucks-inthis instance eight. lVhen the table I is at rest, these projections firest snugly over the upper-sides of the nuts e" and serve to lock thechuck-spindles and work from turning, as seen in Figs. 1 and 9.Projecting `down from the periphery of the disk V', be-

tween the alternating projectionsi" and in the path of the pins f" uponthe nuts e", are removable pins j", Fig. 9, which as the table isshifted engage one of the pins on each of the nuts e" and turn the sameone-quarter, thereby turning the chuck-spindles and the work to presenta fresh side to the action of the tools. The location of the pins j" issuch that the nuts e" have passed from under thev projections 1l"sufficiently to permit of their being turned far enough to ride underthe next projections i" in the path of their travel. Just beneath thedisk V' is a second disk W', Figs. 1 and 11, having eight projectionst'", which engage the rollers c" on the levers Q when the table I is atrest, and hold the carrier M' rigid while the work is being clamped inthe chuck-jaws; but the moment the table begins to shift, the rollers c"ride off the projections k", thereby loosening the carrier M'sufficiently to permit of the easyturning of the chuck-spindles and thework, as before described. Y f

In placing in and removing the work while the table I is at rest theattendant has onlyv IOD and be relocked, and then by giving the screw Sa partial turn the clamping of the work is instantly e'leeted.

Extending up from the platform B are as many supports A for the outeredge of the tableas t-here are chucks, and these supports are arrangeddirectly under the chucks when the table is at rest.

Frein the foregoing it will be seen that seven pieces of work are beingacted on simultaneously, and at each shifting of the table a finishedpiece oi' work is brought under the open space, Fig. 2, Where there isno spindle and Where the attendant stands to remove it and insert afresh blank inthe chuck. Supposing the blank to be a valve with threeopenings to be acted on, I Would thus describe its course around the`table, referring to Fig. 3, where the position of the chucks arenumbered from l to S, the one at S having no spindle overit. The blankis properly inserted at S, and the table shifts it to l,giving it a turnto bring up an opening, which is dressed by a cutter or reamer. It thenpasses to 2 without turning, and a tap does its Work. In passing to itis given anotherturn to bring up the second opening, anda cutterorreamer does its Work. It next passes to 4 Without turning, and a tapacts on it. In passing to 5 it is given anotherturn to bring up thethird opening, and it is acted upon, by a cutter or reamer, and thenpasses without turning to 6, where it is acted on by a tap. It nextpasses to 7 Without turning, and is acted on by a linishing-cutter, andthen it passes with a turn to 8, where it is removed.

In certain classes of Work dies may be substituted for taps on one ormore ot the spindies O.

The machine herein described may be modified in various Ways, and I donot Wish my invention to be understood as limited to the details ofconstruction, for, so far as I know, I am the first to devise a reamingand tapping machine having a horizontal intermittently revolving Workcarrying table provided With chucks and a series ofvertically-reciprocating tool-carrying spindles arranged in a circleabove said table, andI desire to claim the combination specified asbroadly asl the terms of my claims express them.

Having thus fully described my invention, I claim- I. In a reaming andtapping machine, the combination of a horizontal intermittentlyrevolvingWork-carrying table provided with chucks, and a series ofvertically-reciprocating tool-carrying spindles arranged in a circleover said table, substantially as described.

2. In a reaming and tapping machine, the combination of a horizontalintermittentlyrevolving work-carrying table provided with chucks, aseries of vertically-reciprocating tool-carrying spindles arranged in acircle over said table, means for operating said table and spindles andfor automatically turning the Work in the chucks during the shifting ofthe table, substantially as described.

In a reaming and tapping machine, the combination of a horizontalintermittentlyrevolving work-carrying table provided with chucks, aseries ot vertically-reciproeating tool-carrying spindles arranged in acircle over said table, means for operating said spindles and table andfor automatically locking the latter in its working positions, and meansfor automatically turning the Work in the chucks during the shiftingofthe table, substantially as described.

4. In a reaming and tapping machine, the combination of a horizontalintermittentlyrevolving Work-carrying table provided with chucks, aseries of vertically-reciprocating tool-carrying spindles arranged in acircle over said table, and means for automatically reversing thedirection ot rotation of such of the spindles as carry taps or dies ateach end of their strokes, substantially as described.

5. In a reaming and tapping machine having a series ofvertically-reciprocating Workcarrying spindles arranged in a circle, thecombination, with a horizontal Work-carrying table beneath said spindlesand provided with chucks, of a ratchet-wheel connected to said table, anactuating-paved for said ratchet, and means for actuating said pawl tointermittently revolve the table, substantially as described. r

G. In a reaming and tapping machine having a series ofvertically-reciprocating workcarrying spindles arranged in a circle, thecombination, with a horizontal Work-carrying table beneath said spindlesand provided with chucks, of a notched locking-disk connected to saidtable, a locking-lever engaging said disk, and means for disengagingsaid lever and intermittently revolving the table, substantially asdescribed.

7. In a reaming and tapping machine having a horizontal intermittentlyrevolving Work-carrying table provided with chucks, and verticallyreciprocating toolcarrying spindles arranged in a circle over saidtable, the combination, With the chuck-spindles having rectangular nutsthereon, of a fixed locking-disk having projections to engage and turnthe nuts and chuck-spindles during the shifting of the table, and otherprojections to engage and lock the nuts and spindles when the table isat rest,substantially as described.

8. In a reaming and tapping machine, the combination of the shaft F,having a worm R, of the shaft P, having the worm-Wheel (2 and providedwith the cam-disk l', the lever l', engaged by the disk Z', thepaWl-carrier G', c011- nected to the lever I by a link J and providedwith a pawl H', the horizontal workcarrying table I, and theratchet-Wheel E', connected to said table and engaged by said pawl,substantially as described.

9. In a reaming and tapping machine, the

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combination of the shaft F, having a Worm R, the shaft P, having theWorm-Wheel Q and provided with the cam-disk m', the leverK', engaged bythe cam-disk m', the horizontal Work-carrying table I, and the notchedlocking-disk F', engagedl by the lever K', substantially as described.

10. In a reaining and. tapping machine, the combination, with thehorizontal intermittently-revolved work-carrying table provided withchucks, of a centrally-guided and vertically-reciprocating rod,a spidercarried upon the upper end 0f said rod, toollcarrying spindles journaledin and carried by said spider and arranged in a circle, andrevolving'tubular shafts, through which said spindles are guided and inwhich they are feathered, substantiall y as described.

1l. In a reaming and tapping machine, the combination., with therevolvingtubular shaft J, having fast upon its upper end the gears c d,of the tubular spindle-revolving shafts h, having thereon the adjustable gears m n, the former adapted to mesh with the gear c and thelatter with the gear (Z, substantially as described.

l2. In a rearning and tapping machine, the combination of the shaft V,gear q, fast on the said shaft, shaft A', having the gears t u, loosethereon and meshing with the gear q on 0pposite sides thereof, thesliding double clutch w, feathered on the shaft A between the gears t u,the bell-crank shifter B', engaging the clutch w, the shafts D',parallel With and geared to the shaft A', the reciprocating spider M,carrying the rod c', with collar d', and geared connections between theshafts A' D' and the tubular shafts which rotate the tapping-spindles,substantially as described. 13. The herein-described chuck, composed ofthe bed-bar u', sliding spindlecarriers L' M', having spindles R' O'journaled therein, the block i for the carrier M', having the tubularbearing ct", through Which the spindle O' is feathered, the rectangularnut e" on the spindle O', the set-screw P' between the carrier M' andblock N', the lever Q', pivoted in the block N' and bearing against thesetscrew I", the block T, connected to the carrier T' by the screw `S'and having the toe g", and the locking-rack h" in the bar u',substantially as and for the purpose specified.

lut. In a realning and tapping machine, the combination, with the fixeddisk IV', having projections k", of the interniittently-revolvingchucks, whose inner spindle-carriers are provided with set-screws,bearing-blocks for said set-screws, an d levers Q', bearing against saidset-screws and against said disk, substantially as and for the purposespeciied.

15. In a reaming and tapping machine, the combination of the shaft F,having the Worm R, the shaft P, having the Worm-Wheel Q, the drum S onthe shaft P, the vertical spindlecarrying rod L, and the lever U,engaging at one end with a canrgroove in the drum S and connected at theother end with the lower end of the rod L, substantially as and for thepurpose described.

VILLIAM PORTEOUS.

Witnesses:

J. THOMSON CRoss, Y G. S. WENTWORTH.

